pH change, carbon and nitrogen mineralization in paddy soils as affected by Chinese milk vetch addition and soil water regime
Yunfeng Wang, Xingmei Liu, Clayton Butterly, Caixian Tang, Jianming Xu
JOURNAL OF SOILS AND SEDIMENTS | SPRINGER HEIDELBERG | Published : 2013
Purpose: The aim of the research was to explore the effect of Chinese milk vetch (CM vetch) addition and different water management practices on soil pH change, C and N mineralization in acid paddy soils. Materials and methods: Psammaquent and Plinthudult paddy soils amended with Chinese milk vetch at a rate of 12 g kg-1 soil were incubated at 25 °C under three different water treatments (45 % field capacity, CW; alternating 1-week wetting and 2-week drying cycles, drying rewetting (DRW) and waterlogging (WL). Soil pH, dissolved organic carbon, dissolved organic nitrogen (DON), CO2 escaped, microbial biomass carbon, ammonium (NH4+) and nitrate (NO3-) during the incubation period were dynamic..View full abstract
Awarded by National Basic Research Program of China
Awarded by National Key Technologies R&D Program of China
This work was financially supported by the National Basic Research Program of China (2011CB100502), the National Key Technologies R&D Program of China (2012BAD05B04, 2012BAD15B04), and the Fundamental Research Funds for the Central Universities.